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为研究移植肾相对大小与肾功能恢复快慢之间的关系，对１０６例肾移植资料进行回顾分析。计算移植肾相对体积指数（Ｒ），将Ｒ值和肾功能恢复至正常所需时间（Ｄ１）作相关性研究。结果表明，当３＜Ｒ≤９时，Ｒ和Ｄ１呈显著的负相关，相关系数为－０．９９（Ｐ＜０．００１）。上述结果说明，在一定范围内，移植肾相对体积越大，则术后肾功能恢复正常越快，反之，则越慢。认为Ｒ值可供选取供、受者时参考，并且对鉴别诊断和预后判断有一定的参考价值。
To study the relationship between the relative size of renal grafts and the recovery of renal function, 106 renal transplant recipients were retrospectively analyzed. The relative volume index (R) of the graft kidney was calculated and the correlation between the R value and the time required for recovery of the kidney function to normal (D1) was studied. The results showed that there was a significant negative correlation between R and D1 when R <9, with a correlation coefficient of -0.99 (P <0.001). The above results show that within a certain range, the larger the relative volume of the graft, the faster the recovery of postoperative renal function, the contrary, the slower. That the R value for selection for the recipient when the reference, and differential diagnosis and prognosis have some reference value.